Observation 14249: Inocybe sensu lato (Site ID) (Inocybaceae)

When: 2008-11-14

Collection location: Larch Mountain, Multnomah Co., Oregon, USA [Click for map]

Who: Daniel B. Wheeler (Tuberale)

No specimen available

Mouse-colored fibrils on cap, small stature, thick gills, veil scraps adherring to the edge of the rim should make this an easy mushroom to remember, although I don’t remember ever collecting it before.


Proposed Names

1% (3)
Used references: Aurora’s Mushrooms Demystified
75% (2)
Recognized by sight

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= Observer’s choice
= Current consensus


Add Comment
Should have collected
By: Daniel B. Wheeler (Tuberale)
2008-11-16 18:01:18 GMT (+0000)

and taken a spore print. But didn’t. I came up with Tricholoma because of the closeness to T. terreum, which I have already collected. But Inocybe does kind of match. I think the gills are more white than another color, although there is some buff-brown in them as well. The photo of the gills was taken in bright light, so I had to shade the specimen somewhat, which may have affected the apparent gill color. I had to search for I. cincinnata (thanks, Irene!). I think this specimen has a thinner, taller stipe than that species, but perhaps it is more variable than what I have been able to find?

Inocybe, yes
By: Irene Andersson (irenea)
2008-11-16 09:47:43 GMT (+0000)

It reminds of Inocybe cincinnata – but nothing I’d like to propose without seeing smooth, amygdaloid/elliptic spores and slender, thickwalled cystidia..

Inocybe with brown erect scales at center of cap?
By: Daniel B. Wheeler (Tuberale)
2008-11-16 05:26:05 GMT (+0000)

I couldn’t find any with a quick search through Aurora.

Why not Inocybe?
By: Noah Siegel (Noah)
2008-11-16 04:02:49 GMT (+0000)

Tricholoma squarrulosum is a fairly large mushroom with white gills and a grey cap that has little tuff like scales with a white background, its stalk is similar to the cap. It is a strikingly beautiful mushroom that I’ve only seen once.